MCP3204/3208 are 12-bit successive approximation analog-to-digital converters produced by Microchip Technology Inc. They have programmable analog input channels with single-ended or pseudo-differential inputs, use SPI serial interface, and are suitable for applications such as sensor interface, process control, data acquisition, and battery-operated systems.
The Microchip MCP3204/3208 devices are 12-bit successive approximation analog-to-digital (A/D) converters featuring on-board sample and hold circuitry. The MCP3204 supports four input channels, while the MCP3208 supports eight, with inputs programmable as single-ended or pseudo-differential pairs. Communication is handled via a simple serial interface compatible with the SPI protocol.
These devices operate over a broad voltage range of 2.7V to 5.5V and offer high sampling rates of up to 100 ksps at 5V. They are designed for low power consumption, with typical standby currents of 500 nA and active currents of 400 µA at 5V. The datasheet provides comprehensive electrical specifications, including resolution, integral and differential nonlinearity, and dynamic performance metrics.
| Resolution | 12 bits |
|---|---|
| Integral Nonlinearity (MCP3204/3208-B) | ±1 LSB |
| Integral Nonlinearity (MCP3204/3208-C) | ±2 LSB |
| Differential Nonlinearity | ± 1 LSB |
| Max Sampling Rate (5V) | 100 ksps |
| Max Sampling Rate (2.7V) | 50 ksps |
| Operating Voltage Range | 2.7V - 5.5V |
| Operating Temperature Range | -40°C to +85°C |
| Standby Current (Typical) | 500 nA |
| Active Current (Max at 5V) | 400 µA |
The maximum sampling rate is 100 ksps when operating at 5V, and 50 ksps at 2.7V.
The MCP3204 supports four single-ended inputs or two pseudo-differential pairs, while the MCP3208 supports eight single-ended inputs or four pseudo-differential pairs.
The devices use a simple serial interface compatible with the SPI protocol, supporting modes 0,0 and 1,1.